Decorative cap for a sanitary fixture



FIG. 1 is a top, front, right-side perspective view of a decorative cap for a sanitary fixture showing my new design;

FIG. 2 is a rear view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a front view thereof;

FIG. 6 is a bottom view thereof; and,

FIG. 7 is a right side elevational view thereof. 

The ornamental design for a decorative cap for a sanitary fixture, as shown. 